John Mayer arrives at the 55th Annual GRAMMY Awards on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS)

The 55th Annual GRAMMY Awards Red Carpet Arrivals & Pre-Telecast

DJ Kaskade poses in the press room at the 55th Annual GRAMMY Awards at Staples Center on February 10, 2013 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)

The 55th Annual GRAMMY Awards Red Carpet Arrivals & Pre-Telecast

Nominees for Album of the Year, Best Rock Performance, Best Rock Song and Best Americana Album Mumford & Sons arrive on the red carpet at the Staples Center for the 55th Grammy Awards in Los Angeles, California, February 10, 2013. (credit: FREDERIC J. BROWN/AFP/Getty Images)

The 55th Annual GRAMMY Awards - Pre-Telecast

Bonnie Raitt onstage at the The 55th Annual GRAMMY Awards at Nokia Theatre on February 10, 2013 in Los Angeles, California.

US-MUSIC-GRAMMY AWARDS-ARRIVALS

Nominee for Best New Artist and Best Country Solo Performance Hunter Hayes arrives on the red carpet at the Staples Center for the 55th Grammy Awards in Los Angeles, California, February 10, 2013. (credit should read FREDERIC J. BROWN/AFP/Getty Images)

US-MUSIC-GRAMMY AWARDS-PRE-TELECAST

Skrillex (C) receives his Grammy for Best Dance/Electronica Album at the stage of the Staples Center during the pre-telecast of the 55th Grammy Awards in Los Angeles, California, February 10, 2013. (credit : JOE KLAMAR/AFP/Getty Images)

The 55th Annual GRAMMY Awards Red Carpet Arrivals & Pre-Telecast

Taylor Swift onstage at the The 55th Annual GRAMMY Awards at Nokia Theatre on February 10, 2013 in Los Angeles, California.

The 55th Annual GRAMMY Awards Red Carpet & Pre-Telecast

Joy Williams (L) and Taylor Swift receive their Grammy for Best Song Written For Visual Media at the stage of the Staples Center during the pre-telecast of the 55th Grammy Awards in Los Angeles, California, February 10, 2013. (credit: Joe Klamar/AFP/Getty Images)